40.74% is the change from 243 to 342
Calculation steps:
[( 342 - 243 ) ÷ 243] x 100 = 40.74%
Formula
Percentage change = [(342 - 243) / 243] x 100
Subtract the new number by the original number
342 - 243 = 99
99 ÷ 243 = 0.4074074074074074
0.4074074074074074 x 100 = 40.74%